Patriot File Photo

Siobhan Magnus (left) on stage at the Barnstable High School Performing Arts Center in September 2006 with Melanie Black. Both sang with Mike Harmon and Friends during a benefit concert for Crocodile Hunter Steve Irwin.

Tonight’s broadcast of “American Idol” will be shown at the Barnstable High School Performing Arts Center from 8 to 9 p.m., bringing 2008 BHS graduate Siobhan Magnus back (sort of) to the stage that first showcased her talent.

It’s part of a benefit coordinated with WQRC as part of “American Idol Gives Back” week. Half of the evening’s proceeds will benefit Pilot House, a homeless shelter that assists with sobriety, and the other half will go toward “Cape Cod Gives Back,” the local arm of “American Idol Gives Back.”

For more information, check out WQRC’s Web site here, www.wqrc.com, which promises it will be shown “on one of the biggest screens ever.”